Home / 11,391.76-15,721.84-6,357.73

Finding the Fourth Proportional to 11,391.76, 15,721.84 and 6,357.73

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Solution

The fourth proportional to 11,391.76, 15,721.84 and 6,357.73 is: 8,774.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.76 : 15,721.84 = 6,357.73 : x
  2. Step 2: Convert to fraction form
    11,391.76/15,721.84 = 6,357.73/x
  3. Step 3: Cross multiply
    11,391.76x = 15,721.84 × 6,357.73
  4. Step 4: Simplify right side
    11,391.76x = 99,955,135.21
  5. Step 5: Solve for x
    x = 99,955,135.21/11,391.76
  6. Step 6: Final answer
    x = 8,774.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.